The invention discloses tarpaulin processing cutting equipment with an automatic feeding function. The tarpaulin processing cutting equipment comprises a base, a first motor, a dust collector and a cutting length adjusting mechanism. The dust collector is fixed to the top of a bearing frame, a hydraulic cylinder is arranged on the right side of a dust collection channel, the lower side of the hydraulic cylinder is connected with a clamping sleeve through a piston rod, a base plate is fixed to the inner side of the bearing frame, and the cutting length adjusting mechanism is arranged on the right side of the upper end face of the base. According to the tarpaulin processing cutting equipment with the automatic feeding function, a winding drum wound with tarpaulin sleeves the outer side of a rotating rod, nuts can be screwed front and back, the two nuts are close to each other, so that the winding drum abuts against and is fixed to the rotating rod, the head end of the tarpaulin penetrates through the position between two rollers on the upper side and winds around the two rollers on the lower side, the winding drum can rotate along with the rotating rod, meanwhile, the four rollers rotate, the conveying belt device operates, the tarpaulin is conveniently guided to move rightwards, and the automatic feeding effect is achieved.